The Mail.ru Calendar plugin before 2.5.0.61 for Atlassian Jira has XSS via the Name field in a Create Calender action, related to a MailRuCalendar.jspa#period/month URI.
Severity
CVSS 3.0
5.4 medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
EPSS
0.7% chance of exploitation in the next 30 days; higher than 53% of CVEs (scores of 2026-10-31)